Annealing and cooling treatment system for two-stage hot wind circulation of glass ceramic tunnel crystallization kiln

A technology of hot air circulation and glass-ceramics, which is applied in the field of annealing and cooling treatment systems of sintered glass-ceramic tunnel crystallization kilns, can solve problems such as thermal stress relief, product cracking, etc., to improve quality and strengthen hot air agitation , the effect of increasing the convective heat transfer effect

Inactive Publication Date: 2010-11-10
WUHAN UNIV OF TECH
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Problems solved by technology

At the same time, in the cooling process, the cooling speed of the edge of the product is often too fast, and the middle is slow. The thermal stress caused by uneven cooling cannot be eliminated by the viscous flow of the particles. When the stress is too large, the product will also crack.

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  • Annealing and cooling treatment system for two-stage hot wind circulation of glass ceramic tunnel crystallization kiln
  • Annealing and cooling treatment system for two-stage hot wind circulation of glass ceramic tunnel crystallization kiln
  • Annealing and cooling treatment system for two-stage hot wind circulation of glass ceramic tunnel crystallization kiln

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Embodiment Construction

[0020] The present invention will be further described below with reference to the drawings and examples.

[0021] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, the two-stage hot air circulation annealing and cooling treatment system of the tunnel crystallization kiln for glass-ceramics includes the kiln body 22 of the annealing and cooling treatment system of the tunnel crystallization kiln. The kiln body 22 is insulated from the firing zone Zone 7 to the kiln end outlet (ie according to the product forward direction 17) is divided into quenching section 1, cooling zone slow cooling section 2, first cooling zone 3, second cooling zone 4, kiln end cooling section 5, 1120℃ according to the temperature range The interval between ~950℃ is the quenching section 1, the interval between 850℃~550℃ is the slow cooling section of the cooling zone 2, the interval between 500℃~250℃ is the first cooling zone 3, and the interval between 250℃~150℃ is the second cooling zone 4,1...

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Abstract

The invention belongs to the technical filed of glass ceramic annealing by a sintering method, and discloses an annealing and cooling treatment system for two-stage hot wind circulation of a glass ceramic tunnel crystallization kiln. The treatment system is characterized in that the upper part and the lower part of kiln walls at two sides of a quench zone are respectively installed with a row of fast cold wind blowing openings which are communicated with fast cold wind blowing opening branch pipes, the fast cold wind blowing openings are all communicated with the output ports of second hot wind circulation pipes; the kiln walls at two sides of the slow cooling segment of a cooling zone are respectively provided with three rows of hot circulation wind blowing openings which are communicated with the hot circulation wind blowing opening branch pipes, all hot circulation wind blowing opening branch pipes are communicated with the output ports of first hot wind circulation pipes; the first hot circulation wind suction opening blowing branch pipes are all communicated with the input ports of the first hot wind circulation pipes; and the second hot circulation wind suction opening blowing branch pipes are all communicated with the input ports of the second hot wind circulation pipes. The annealing and cooling treatment system can improve product quality, and reduce deformation, burst and other defects of the products.

Description

Technical field [0001] The invention belongs to the technical field of annealing of sintering method glass-ceramics. Specifically, it relates to an annealing and cooling treatment system of a tunnel crystallization furnace for sintering method glass-ceramics. Background technique [0002] The well-known sintering and crystallization process of architectural decoration glass-ceramics is as follows: glass particles are laid flat in a mold composed of refractory materials, and then pushed into a kiln for sintering, crystallization, annealing and cooling. The structure of the kiln refers to the traditional ceramic tunnel kiln. Therefore, the cooling method of the products in the tunnel kiln usually adopts a combination of direct and indirect cooling methods. The product can be rapidly cooled in the range of 1120℃ to 950℃, and the product is quenched by the cold air sprayed by the rapid cooling barrier air curtain. The slow cooling stage is from 850℃~400℃, and the product is cooled by...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B25/00
Inventor 程金树何峰李诗文汤李缨谢俊
Owner WUHAN UNIV OF TECH
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